CN203587803U - GPS serial interface data demultiplexer - Google Patents
GPS serial interface data demultiplexer Download PDFInfo
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- CN203587803U CN203587803U CN201320507667.1U CN201320507667U CN203587803U CN 203587803 U CN203587803 U CN 203587803U CN 201320507667 U CN201320507667 U CN 201320507667U CN 203587803 U CN203587803 U CN 203587803U
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Abstract
The utility model provides a GPS serial interface data demultiplexer comprising a GPS antenna, a GPS module connected with the GPS antenna, a GPS data processing module connected with the GPS module, and a multi-serial port expansion module connected with the GPS data processing module; the GPS antenna receives a GPS radiofrequency signal; the GPS module decodes the received GPS radiofrequency signal and outputs decoded information; the GPS data processing module compiles the decoded information according to needs, and outputs the compiled information to the multi-serial port expansion module. Terminal equipment can commonly share the GPS system by employing the GPS serial interface data demultiplexer, thereby saving GPS system expenditure and improving economic benefits.
Description
Technical field
The utility model relates to location systems art field, particularly a kind of GPS serial line interface data shunt.
Background technology
From the nineties in 20th century, gps system (Global Positioning System, GPS), since opening for free to the whole world, be widely used in the field of navigation, traffic, geodetic surveying, precision time service etc. and position, speed, time correlation.Can say, gps system is most advanced, most widely used satellite navigation and location system at present, has extraordinary market outlook.
A GPS group of stars is comprised of 24 or more artificial satellites, and they lay respectively in 6 orbit planes, are highly approximately 12550 miles.These artificial satellites are undertaken synchronously by spaceborne atomic clock, constantly with two frequencies on L-band, transmit distance measuring signal, their current time and track dynamic, these two frequencies are called as respectively L1(1575.42MHz) and L2(1227.6MHz).Civilian GPS is only used L1 wave band conventionally, and exploration needs to use L1 and L2 wave band with military use simultaneously.
By GPS location compute, can obtain current latitude, longitude and height, error, is regularly accurate in 10ns with interior (only using L1 wave band) at 5m.Gps receiver is separated with information and the time/position of standard format output artificial satellite, and wherein NMEA0183 standard is modal formal definition.The defined statement of these standards has comprised that visible artificial satellite, satellite signal intensity, GPS or UTC time separate and separate position.Manufacturer also can self-defined statement, to export data or the access to oneself gps receiver specific function is provided with the form of customization.
At present, gps system is applied on numerous terminal devices, and usually appears under same applied field point environment, and a plurality of terminal devices are because data-interface is inconsistent, and the gps system that use is carried separately respectively.Between each terminal device, cannot share gps system, cause the significant wastage of resource.
Utility model content
The purpose of this utility model is to provide a kind of GPS serial line interface data shunt, to solve in prior art, between each terminal device, cannot share gps system, causes the problem of resource significant wastage.
For solving the problems of the technologies described above, the utility model provides a kind of GPS serial line interface data shunt, described GPS serial line interface data shunt comprises: gps antenna, the GPS module being connected with described gps antenna, the gps data processing module being connected with described GPS module and the many serial ports expansion module being connected with described gps data processing module, wherein
Described gps antenna is in order to receive GPS radiofrequency signal;
Described GPS module is decoded to the GPS radiofrequency signal receiving, and exports decoded information;
Described gps data processing module is carried out layout as required to decoded information, and programmed information is outputed to many serial ports expansion module.
Optionally, in described GPS serial line interface data shunt, described GPS module after the GPS radiofrequency signal receiving is decoded, obtain latitude, longitude, highly, speed, date, time, course and/or satellite condition information.
Optionally, in described GPS serial line interface data shunt, the form of the decoded information of described GPS module output is GGA, GLL, GSA, GSV, RMC and/or VTG.
Optionally, in described GPS serial line interface data shunt, described GPS module can send according to the request of described gps data processing module the decoded information of customization data form.
Optionally, in described GPS serial line interface data shunt, described GPS module can be pressed specified time interval according to the request of described gps data processing module and be sent decoded information.
Optionally, in described GPS serial line interface data shunt, described gps data processing module is carried out as required layout to decoded information and is comprised: set information form, content and/or baud rate as required.
Optionally, in described GPS serial line interface data shunt, described GPS module is connected with described gps data processing module by TTL serial ports.
Optionally, in described GPS serial line interface data shunt, described gps data processing module is connected with described many serial ports expansion module by DCB interface.
The GPS serial line interface data shunt providing by the utility model, each terminal device can share gps system, has saved the spending of gps system, has improved economic benefit.
Accompanying drawing explanation
Fig. 1 is the structural representation of the GPS serial line interface data shunt of the utility model embodiment;
Fig. 2 is the business flow processing figure of the GPS serial line interface data shunt of the utility model embodiment.
Embodiment
Below in conjunction with the drawings and specific embodiments, the GPS serial line interface data shunt the utility model proposes is described in further detail.According to the following describes and claims, advantage of the present utility model and feature will be clearer.It should be noted that, accompanying drawing all adopts very the form of simplifying and all uses non-ratio accurately, only in order to convenient, the object of aid illustration the utility model embodiment lucidly.
Please refer to Fig. 1, it is the structural representation of the GPS serial line interface data shunt of the utility model embodiment.As shown in Figure 1, described GPS serial line interface data shunt 1 comprises: gps antenna 10, the GPS module 11 being connected with described gps antenna 10, the gps data processing module 12 being connected with described GPS module 11 and the many serial ports expansion module 13 being connected with described gps data processing module 12, wherein
Described gps antenna 10 is in order to receive GPS radiofrequency signal;
The GPS radiofrequency signal that 11 pairs of described GPS modules receive is decoded, and exports decoded information;
12 pairs of decoded informations of described gps data processing module carry out layout as required, and programmed information is outputed to many serial ports expansion module 13.
In the present embodiment, described GPS module 11 is connected with described gps data processing module 12 by TTL serial ports; Described gps data processing module 12 is connected with described many serial ports expansion module 13 by DCB interface.
In the present embodiment, described GPS module 11 can be comprised of RF radio frequency chip, baseband chip and core codec CPU, to complete the decoding for GPS radiofrequency signal.Concrete, described GPS module 11 is calculated according to the parameter of a plurality of satellite transmissions that receive, obtain about latitude, longitude, highly, the decoded information such as speed, date, time, course and/or satellite situation.Then decoded information serial is outputed to gps data processing module 12, its output data are ASCII coding, content comprised latitude, longitude, highly, the decoded information such as speed, date, time, course and/or satellite situation.Output data layout adopts NMEA-0183 communication standard, and common expressions is 6 kinds, comprises GGA, GLL, GSA, GSV, RMC and VTG.
Further, in the present embodiment, described GPS module 11 can send according to the request of described gps data processing module 12 decoded information of customization data form; Described GPS module 11 can also be pressed specified time interval according to the request of described gps data processing module 12 and be sent decoded information.For example, described GPS module 11 sends a certain specific NMEA statement according to the request of described gps data processing module 12 every some milliseconds.Thus, can improve the utilization ratio for gps system.
In the present embodiment, described gps data processing module 12 can adopt single-chip microcomputer, can be according to different application needs, programming Control is from serial data format and the transmission time interval of GPS module 11, and in real time data are reprocessed to processing, i.e. set information form, content and/or baud rate as required.According to predefined serial ports configuration parameter, (can meet NMEA-0183 communication specification, also can self-defining data form), reset after information format, content and/or the baud rate from the decoded information of GPS module 11, by DCB interface, send to many serial ports expansion module 13, then, exterior terminal equipment can by with many serial ports expansion module 13 on serial line interface 01, serial line interface 02 ... or serial line interface N connects, to obtain gps data, thereby realization shares for gps system, has improved resource utilization.
In the present embodiment, many serial ports expansion module 13 is a kind of chips that distribute a plurality of serial line interfaces to connect for different exterior terminal equipment application, each exterior terminal equipment can communicate by it and gps data processing module 12, and by gps data processing module 12, is controlled separately the parameters such as baud rate, data layout of each serial line interface.Many serial ports expansion module 13 has increased the terminal device quantity being connected with serial line interface flexibly, makes a plurality of terminal devices of applying GPS system that need can share a set of gps system.
In the present embodiment, further, also provide the operation flow of GPS serial line interface data shunts.Concrete, please refer to Fig. 2, it is the business flow processing figure of the GPS serial line interface data shunt of the utility model embodiment.As shown in Figure 2, after GPS serial line interface data shunt 1 brings into operation, first by gps antenna 10, obtain GPS radiofrequency signal; Then, GPS radiofrequency signal is offered to GPS module 11 and decodes, obtain content and be longitude, latitude, highly, the decoded information of time etc.; Then, decoded information is offered to gps data processing module 12, for the decoded information obtaining, gps data processing module 12 can further propose the requirements such as form, the time interval to GPS module 11, to control output format, the time interval of GPS module 11, also can offer according to set output format many serial ports expansion module 13, also can process restructuring to gps data, obtain the data that terminal device needs, and the data after processing are offered to many serial ports expansion module 13, by many serial ports expansion module 13, output to each exterior terminal equipment.
As fully visible, the GPS serial line interface data shunt providing by the present embodiment, each terminal device can share gps system, has saved the spending of gps system, has improved economic benefit.
Foregoing description is only the description to the utility model preferred embodiment; the not any restriction to the utility model scope; any change, modification that the those of ordinary skill in the utility model field is done according to above-mentioned disclosure, all belong to the protection domain of claims.
Claims (3)
1. a GPS serial line interface data shunt, it is characterized in that, comprise: gps antenna, the GPS module being connected with described gps antenna, the gps data processing module being connected with described GPS module and the many serial ports expansion module being connected with described gps data processing module, wherein
Described gps antenna is in order to receive GPS radiofrequency signal;
Described GPS module is decoded to the GPS radiofrequency signal receiving, and exports decoded information;
Described gps data processing module is carried out layout as required to decoded information, and programmed information is outputed to many serial ports expansion module.
2. GPS serial line interface data shunt as claimed in claim 1, is characterized in that, described GPS module is connected with described gps data processing module by TTL serial ports.
3. GPS serial line interface data shunt as claimed in claim 1, is characterized in that, described gps data processing module is connected with described many serial ports expansion module by DCB interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320507667.1U CN203587803U (en) | 2013-08-19 | 2013-08-19 | GPS serial interface data demultiplexer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320507667.1U CN203587803U (en) | 2013-08-19 | 2013-08-19 | GPS serial interface data demultiplexer |
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| CN203587803U true CN203587803U (en) | 2014-05-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103439723A (en) * | 2013-08-19 | 2013-12-11 | 电信科学技术第一研究所 | Gps serial interface data splitter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103439723A (en) * | 2013-08-19 | 2013-12-11 | 电信科学技术第一研究所 | Gps serial interface data splitter |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140507 Termination date: 20200819 |
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| CF01 | Termination of patent right due to non-payment of annual fee |